<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>cookie</title>
</head>
<body>
    <script>
        let date = new Date();
        date.setMinutes(date.getMinutes()+1);
        document.cookie = `username=mikaisa;expires=${date.toUTCString()}`;
        document.cookie = `username2=mikaisa2`;

        console.log(getCookie());

        function getCookie(){
            let str = document.cookie;
            let arr = str.split(';');
            return arr;
        }
    </script>
</body>
</html>